Question: Let a set called Device be defined as Device = { tablet , laptop, phone } and a set Operating System ( OS ) ,

Let a set called Device be defined as Device ={tablet, laptop, phone} and a set Operating System (OS), be defined as OS ={Widgets 10, OS W, Smithee}. If you want to define ordered pairs of devices and operating systems, which of the following is correct?
{tablet, Widgets 10}
[phone, OS W]
(tablet, Widgets 10)
Laptop, OS W

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